Regenerator material and regenerative refrigerator
AssigneeSumitomo Heavy Industries, Ltd.
InventorsMingyao Xu, Tian Lei, Akihiro Tsuchiya
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Abstract
A first-stage regenerator material and a second-stage regenerator material are regenerator materials each having a laminated structure for use in a GM refrigerator. Each layer of the regenerator material is provided with a plurality of holes to allow gas to pass therethrough along a laminating direction. At least one layer includes a base material and a coating covering the base material. Volumetric specific heat of the coating is larger than volumetric specific heat of the base material in a temperature range from 20 K to 40 K.
Claims16
A regenerator material for use in a regenerative refrigerator, the regenerator material comprising:
- a laminated structure, wherein each layer of the laminated structure is provided with a plurality of holes to allow gas to pass therethrough along a laminating direction, wherein
- at least one layer of the laminated structure includes a base material and a coating covering the base material, and wherein volumetric specific heat of the coating is larger than
- volumetric specific heat of the base material in a temperature range from 20 K to 40 K, except a case in which the coating consists primarily of bismuth.
A regenerator material for use in a regenerative refrigerator, the regenerator material comprising:
- a laminated structure, wherein each layer of the laminated structure is provided with a plurality of holes to allow gas to pass therethrough along a laminating direction, wherein
- at least one layer of the laminated structure is provided with a coating made of an alloy of bismuth and tin, an alloy of antimony and tin, or an alloy of bismuth, antimony, and tin.
Dependencies are inferred from the claim text.